AutoCodes – Chrysler – B273F Chrysler

B273F Chrysler Code - Airbag Signal Test Failed

Quick Answer

This diagnostic runs continuously when the following conditions are met: Ignition on and Radio on. Common causes include Faulty Radio (RRM), Radio harness is open or shorted, Radio circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B273F Chrysler indicates Airbag Signal Test Failed.
Common causes: Common causes include Faulty Radio (RRM), Radio harness is open or shorted, Radio circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 456

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B273F Chrysler Description

This diagnostic runs continuously when the following conditions are met: Ignition on and Radio on. This Diagnostic Trouble Code (DTC) is a Loss of communication fault for the serial interface between the Radio (RRM) and the Occupant Restraint Controller (ORC). It looks for heartbeat signal and sets fault if it disappears for more than 65 seconds.

OBDII Code B273F Chrysler - Airbag Signal Test Failed - AutoCodes.com — B273F Chrysler Code - Airbag Signal Test Failed

What does this mean?

What are the Possible Causes of the DTC B273F Chrysler?

Faulty Radio (RRM)
Radio harness is open or shorted
Radio circuit poor electrical connection
Faulty Occupant Restraint Controller (ORC)

How to Fix the DTC B273F Chrysler?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B273F Chrysler code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B273F Chrysler code?

Need more information on how to fix the B273F Chrysler code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B273F Chrysler code diagnosed by a professional: Find a repair shop in your area

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.